Hot-air furnace



s. L RUSSELL.

Hot Air Furnace.

No 12,875. Patented May :5, 1855 (y Fay 2.

31 I J is; I 2Q Q) I M" HIHWEIIU'! f S I. RUSSELL, OF CHICAGO, ILLINOIS.

HOT-AIR runnncn.

Specifieation of Letters Patent No. 12,875, dated. May 15, 1855.

T all whom it may concern Be itknown that I, s. I. ne ate, of Chicago,in the county f of Cook andState of Illinois, have invented a new andImproved I Hot-AirFurnace, and I, do hereby declare that the followingis a full, clear, and exact description ofthe same, reference being hadtothe anneiied drawings, making a part of this specification,infjwhich--Figure 1,isf a longiutdinal vertical "section of my improvement Figs.2and?) showing theplaneof section. Fig. 2,

is a transverse verticalsection of ditto (y) r (1 Figs. 1 and 3 showingthe plane of section, ditto Fig. 3,is ahorizontal [section of a Fig. 3,showing the plane of section. I I,

Similar letters of reference indicate corresponding parts inithe severalfigures.

This invention relatesyto a new and improved hot air furnace, andconsists in the pecullar constructlon oft-he same, arrange? presentlyshown, wherebyair may :beheated with a small consumption of fuel as agreat area of heating surface, is exposed within the alrheatlng chamber.

To enable others skineamth an to fully understand and construct myinvention, I

will proceed to describe it.

A represents a casing which may be of rectangular form and of anypropersize, the casing may be constructed of masonry, or

cast iron. At the front end of this casing and at its lower part thefirechamber B is placed, thefire chamber being constructed of iron linedwithfire brick, or in any other proper. manner and having its grate Oformed of a series of round bars (a) placed .a suitablefldistance apart,see Fig. 1. The bars (a) may be so arranged that they may .be rotatedwhen necessary for the purpose of rakingthe ashes from the fire chamber.

Directly over the fire chamber B, there is asquare trunk or box D, onwhich, and communicating with it, there are three vertical trunks E, E,E, and there arefalso three vertical trunks F, F, F, at thebackpart ofthe casing.

ThetrunksF being connected at their upper endsby a horizontal trunk G.

to whichthe smoke pipe His attached.

' The vertical trunks E, F, at the front and back parts of the casingare connected by a series ofhorizontal pipes I, one being over the otherat suitable distances apart, as

shown inFigs. 1 and 3.

J, J, are hot air pipes which. communicate with the upper part of thechamber within the casingA.

Within the casing A there are placed a series of horizontal plates Kwhich do not extend the entire length of the casing, a

space being left at the back end, these plates are placed a suitabledistance apart as shown in Figs. 1 and 2. I

The plates K, being placed horizontally within the casing A give acircuitous direction to the cold air around and between the pipes I, andcause said air, which is to be heatedby passing through the casing, tobe generally diffused within the chamber, sub.-

jecting it to a great area of heated surface.

At the front end of the casing and at its lower part there is an openingL, see Fig. 1.

Thesmoke and heat from the fire chamber B passes up into trunks E,horizontal pipes I and trunksF into the smoke pipe v H and a largeheating surface is obtained thereby, The cold air enters the chamberwithint-he casing through the opening L and passes to the back end ofthe casing and then back again to the front end and becomes perfectlyheated and passes into the pipes J,J, by which it is conveyed to thedesired apartments, valves or dampers may be placed in the trunks E, F,if desired in order to give the draft a more circuitous passage inpassing through the pipes I and trunks E, F.

What I claim as new and desire to secure by Letters Patent is g Theemployment of the vertical trunks E, F, horizontal pipes I, andhorizontal plates K, K, connected with the firechamber B and inclosed bya casing A, when arranged substantially as herein shown, and e for thepurpose as set forth.

S. I. RUSSELL. Witnesses:

Gno. T. GLINE,

BRADFORD SLOAT,

C. D. WOLF.

